/* $Id: //depot/blt/include/blt/fdl.h#3 $
**
** Copyright 1999 Sidney Cammeresi
** All rights reserved.
**
** Redistribution and use in source and binary forms, with or without
** modification, are permitted provided that the following conditions
** are met:
** 1. Redistributions of source code must retain the above copyright
**    notice, this list of conditions, and the following disclaimer.
** 2. Redistributions in binary form must reproduce the above copyright
**    notice, this list of conditions, and the following disclaimer in the
**    documentation and/or other materials provided with the distribution.
** 3. The name of the author may not be used to endorse or promote products
**    derived from this software without specific prior written permission.
**
** THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
** IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
** OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
** IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
** INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
** NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
** DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
** THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
** (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
** THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/

#ifndef _BLT_FDL_H_
#define _BLT_FDL_H_

#include <blt/types.h>

#define MAX_FD_HANDLERS     64
#define MAX_FDS             256

typedef struct
{
	const char *name;

	int (*read) (void *cookie, void *buf, size_t count);
	int (*write) (void *cookie, const void *buf, size_t count);
	int (*ioctl) (void *cookie, unsigned long request, char *argp);
	int (*close) (void *cookie);
} fdl_type;

typedef struct
{
	fdl_type *imp;
	void *cookie;
} __filedesc;


#ifdef __cplusplus
extern "C" {
#endif
	void __libc_init_fdl (void);
	void __libc_fini_fdl (void);
	int _fdl_alloc_descriptor (fdl_type *handler, void *cookie);
	void _fdl_free_descriptor (int desc);
#ifdef __cplusplus
}
#endif

#endif

